CAJ | 학술논문

大气紊流是飞机巡航状态中影响飞机运动的主要大气扰动现象，以奖状飞机和波音747为例，研究飞机受大气紊流影响所产生的飞行姿态变化。使用了两种方法进行飞行仿真，一种是基于六自由度飞行力学方程的实时仿真法，另一种是基于线性化小扰动方程组的响应频谱法。通过与试飞数据进行比较，分析两种方法的优缺点。研究表明，六自由度飞行实时仿真可以更好地模拟大型飞机大气扰动下的飞行状态，较准确地表征各项参数变化特性。
대기문류시비궤순항상태중영향비궤운동적주요대기우동현상，이장상비궤화파음747위례，연구비궤수대기문류영향소산생적비행자태변화。사용료량충방법진행비행방진，일충시기우륙자유도비행역학방정적실시방진법，령일충시기우선성화소우동방정조적향응빈보법。통과여시비수거진행비교，분석량충방법적우결점。연구표명，륙자유도비행실시방진가이경호지모의대형비궤대기우동하적비행상태，교준학지표정각항삼수변화특성。
The atmospheric turbulence is the main atmospheric disturbance affecting the flight. In this paper, the airplane of Citation 550 and the airplane of B747 are exampled to analyse the motion error affected by the atmos-pheric turbulence. Two simulation methods are used. The one is real-time simulation based on six degrees of free-dom flight dynamics equations. The other is power spectrum density method based on the lineation small-perturba-tion equations. Compared with the data of flight tests, pros and cons of two methods have been studied. The results show that real-time simulation based on six degrees of freedom flight dynamics equations is more accurate and could be used for the simulation of large aircraft.